diff --git a/plugins/comment_classification/README.md b/plugins/comment_classification/README.md
index 9f8674e..22c316e 100644
--- a/plugins/comment_classification/README.md
+++ b/plugins/comment_classification/README.md
@@ -11,3 +11,9 @@ choosing the label of the comment. Example: "Suggestion",
 "Disagreement"...
   * Status: users with permission can include a Status for a comment.
 Example: "Merged", "Unmerged"
+
+Dependency
+==========
+
+This plugin was developed to help public consulting and needs the
+CommentGroupPlugin enabled to be used.
--
libgit2 0.21.2